The hot-section components of aero-engines and gas turbine worked in marine environments are subjected to coupling effects of mechanical loads brought by high temperature， high pressure and high speed and environmental attacks brought by high salt spray and high humidity during operation. It usually results in hot corrosion-fatigue failure of hot-section components， affecting the structural integrity， safety and reliability of aero-engines and gas turbines. This paper summarizes and analyzes the hot corrosion mechanisms， hot corrosion-fatigue failure mechanisms， hot corrosion-fatigue life prediction models and life evaluation methods of turbine disc and blade superalloys as well as coatings， and outlooks the development trend of experimental and simulation studies of the hot corrosion-fatigue of aero-engine and gas turbine hot-section components. It is expected to promote the development of structural integrity evaluation methods for hot-section components under the coupling effects of aero-engine/gas turbine work loading and marine environments.